Any CMS that could help me with making a site like this?

Basically I would like to make something like this
Where other people can register and can post guides about how each champion could be played, items and stuff like that.
Thanks
Can anyone tell me what cms is this site using google mobafire please I cant post links

So you are looking forum? This is made with vbulletin but there is free options too. Like phpbb and mybb. Just test install those in your host and look some themes and plugins and you will see what you like. There is tons of plugins etc availabe for free, just google